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annotate asyncio_threads/bucket_questions/single_thread_async.py @ 71:75de5903355c

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Giagantic changes that update Dowa library to be more align with stb style array and hashmap. Updated Seobeo to be caching on server side instead of file level caching. Deleted bunch of things I don't really use.
author June Park <parkjune1995@gmail.com>
date Sun, 28 Dec 2025 20:34:22 -0800
parents 46daba6e3cf4
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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48
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1 import asyncio
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2 from typing import Dict
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3
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4 class DistributedCache:
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6 def __init__(self):
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7 self._user_bucket_map: Dict[str, TokenBucket] = {}
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9
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10 def get_bucket(self, user_id: str):
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11 return self._user_bucket_map[user_id]
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12
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13 def set_bucket(self, user_id: str):
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14 self._user_bucket_map[user_id] = TokenBucket()
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17 INITIAL_VALUES = 10
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18
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19 class TokenBucket:
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21 def __init__(self, initial_values = INITIAL_VALUES):
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22 self._tokens = initial_values
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23 self._refill_values = initial_values
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24 self._lock = asyncio.Lock()
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25
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26 def get_tokens(self):
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27 print(self._tokens)
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28 return self._tokens
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29
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30 async def consume_tokens(self, token: int):
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31 async with self._lock:
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32 if self.get_tokens() < token:
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33 return False
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34
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35 await asyncio.sleep(1)
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36 self._tokens -= token
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37 return True
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38
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39 async def refill_tokens(self):
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40 async with self._lock:
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41 self._tokens = self._refill_values
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43
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44 cache = DistributedCache()
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45
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46 user_1 = "JUNE"
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47 user_2 = "VICTOR"
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48 cache.set_bucket(user_1)
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49 cache.set_bucket(user_2)
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51 async def refill_token_bucket(user_id: str):
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52 await cache.get_bucket(user_id).refill_tokens()
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53
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54 async def use_tokens(user_id: str, tokens: int):
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55 return await cache.get_bucket(user_id).consume_tokens(tokens)
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56
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57 async def run():
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58 return_value = await asyncio.gather(
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59 use_tokens(user_1, 10),
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60 refill_token_bucket(user_1),
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61 use_tokens(user_1, 10),
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62 use_tokens(user_2, 10),
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63 )
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64 print(return_value)
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65
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66 if __name__ == "__main__":
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67 asyncio.run(run())